/visualize/image/chart - Kinetica Docs

URL: http://<db.host>:<db.port>/visualize/image/chart

Scatter plot is the only plot type currently supported. A non-numeric column can be specified as x or y column and jitters can be added to them to avoid excessive overlapping. All color values must be in the format RRGGBB or AARRGGBB (to specify the alpha value). The image is contained in the output parameter image_data field.

Input Parameter Description

string

Name of the table containing the data to be drawn as a chart, in [schema_name.]table_name format, using standard name resolution rules.

array of strings

Names of the columns containing the data mapped to the x axis of a chart.

array of strings

Names of the columns containing the data mapped to the y axis of a chart.

double

Lower bound for the x column values. For non-numeric x column, each x column item is mapped to an integral value starting from 0.

double

Upper bound for the x column values. For non-numeric x column, each x column item is mapped to an integral value starting from 0.

double

Lower bound for the y column values. For non-numeric y column, each y column item is mapped to an integral value starting from 0.

double

Upper bound for the y column values. For non-numeric y column, each y column item is mapped to an integral value starting from 0.

int

Width of the generated image in pixels.

int

Height of the generated image in pixels.

string

Background color of the generated image.

map of string to arrays of strings

Rendering style options for a chart.

Show style_options

The color of points in the plot represented as a hexadecimal number.The default value is 0000FF.

The size of points in the plot represented as number of pixels.The default value is 3.

The shape of points in the plot.The default value is square.The supported values are:

none
circle
square
diamond
hollowcircle
hollowsquare
hollowdiamond

Point color class break information consisting of three entries: class-break attribute, class-break values/ranges, and point color values. This option overrides the pointcolor option if both are provided. Class-break ranges are represented in the form of “min:max”. Class-break values/ranges and point color values are separated by cb_delimiter, e.g. {“price”, “20:30;30:40;40:50”, “0xFF0000;0x00FF00;0x0000FF”}.

Point size class break information consisting of three entries: class-break attribute, class-break values/ranges, and point size values. This option overrides the pointsize option if both are provided. Class-break ranges are represented in the form of “min:max”. Class-break values/ranges and point size values are separated by cb_delimiter, e.g. {“states”, “NY;TX;CA”, “3;5;7”}.

Point shape class break information consisting of three entries: class-break attribute, class-break values/ranges, and point shape names. This option overrides the pointshape option if both are provided. Class-break ranges are represented in the form of “min:max”. Class-break values/ranges and point shape names are separated by cb_delimiter, e.g. {“states”, “NY;TX;CA”, “circle;square;diamond”}.

A character or string which separates per-class values in a class-break style option string.The default value is ;.

An expression or aggregate expression by which non-numeric x column values are sorted, e.g. “avg(price) descending”.

An expression or aggregate expression by which non-numeric y column values are sorted, e.g. “avg(price)”, which defaults to “avg(price) ascending”.

Type of x axis scale.The default value is none.

none: No scale is applied to the x axis.
log: A base-10 log scale is applied to the x axis.

Type of y axis scale.The default value is none.

none: No scale is applied to the y axis.
log: A base-10 log scale is applied to the y axis.

If this options is set to false, this endpoint expects request’s min/max values are not yet scaled. They will be scaled according to scale_type_x or scale_type_y for response. If this options is set to true, this endpoint expects request’s min/max values are already scaled according to scale_type_x/scale_type_y. Response’s min/max values will be equal to request’s min/max values.The default value is false.

Amplitude of horizontal jitter applied to non-numeric x column values.The default value is 0.0.

Amplitude of vertical jitter applied to non-numeric y column values.The default value is 0.0.

If this options is set to true, all non-numeric column values are plotted ignoring min_x, max_x, min_y and max_y parameters.The default value is false.

map of string to strings

Optional parameters.The default value is an empty map ( {} ).

Show options

Encoding to be applied to the output image. When using JSON serialization it is recommended to specify this as base64.The default value is none.

base64: Apply base64 encoding to the output image.
none: Do not apply any additional encoding to the output image.

Output Parameter Description

The Kinetica server embeds the endpoint response inside a standard response structure which contains status information and the actual response to the query. Here is a description of the various fields of the wrapper:

String

‘OK’ or ‘ERROR’

String

Empty if success or an error message

String

‘visualize_image_chart_response’ or ‘none’ in case of an error

String

Empty string

JSON or String

This embedded JSON represents the result of the /visualize/image/chart endpoint:

Show data_str

double

Lower bound for the x column values as provided in input parameter min_x or calculated for non-numeric columns when plot_all option is used.

double

Upper bound for the x column values as provided in input parameter max_x or calculated for non-numeric columns when plot_all option is used.

double

Lower bound for the y column values as provided in input parameter min_y or calculated for non-numeric columns when plot_all option is used.

double

Upper bound for the y column values as provided in input parameter max_y or calculated for non-numeric columns when plot_all option is used.

int

Width of the image as provided in input parameter width.

int

Height of the image as provided in input parameter height.

string

Background color of the image as provided in input parameter bg_color.

bytes

The generated image data.

map of string to arrays of strings

Information returned for drawing labels for the axes associated with non-numeric columns.

Show axes_info

Sorted non-numeric x column value list for drawing x axis label.

X axis label positions of sorted_x_values in pixel coordinates.

Sorted non-numeric y column value list for drawing y axis label.

Y axis label positions of sorted_y_values in pixel coordinates.

map of string to strings

Additional information.

Empty string in case of an error.

​Input Parameter Description

​Output Parameter Description

Input Parameter Description

Output Parameter Description